GB/T 23518-2020 English PDF

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GB/T 23518-2020: Palladium on carbon catalyst
Status: Valid

GB/T 23518: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23518-2020	339	Add to Cart	4 days	Palladium on carbon catalyst	Valid
GB/T 23518-2009	399	Add to Cart	3 days	Palladium on activated carbon catalyst	Obsolete

Similar standards

GB/T 23520   GB/T 23276   GB/T 23277   GB/T 23519   GB/T 23517   

Basic data

Standard ID: GB/T 23518-2020 (GB/T23518-2020)
Description (Translated English): Palladium on carbon catalyst
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H68
Classification of International Standard: 77.150.99
Word Count Estimation: 18,195
Date of Issue: 2020-09-29
Date of Implementation: 2021-08-01
Older Standard (superseded by this standard): GB/T 23518-2009
Regulation (derived from): National Standard Announcement No. 20 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 23518-2020: Palladium on carbon catalyst

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Palladium on carbon catalyst ICS 77.150.99 H68 National Standards of People's Republic of China Replace GB/T 23518-2009 Palladium on carbon 2020-09-29 released 2021-08-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 23518-2009 "Palladium Carbon". Compared with GB/T 23518-2009, the main technical changes are as follows. --- Increase the types of carrier carbon materials. carbon black, mesoporous carbon, carbon nanotubes, carbon molecular sieves (see Chapter 3, 5.3); --- Delete the requirements for ash content in the original standard (see 4.4 and 5.3 of the.2009 edition); --- Increased the requirements of palladium-carbon catalytic performance (see 5.3, 6.2); ---During the moisture content test, the drying temperature is changed from 70℃±5℃ to 105℃±5℃, and the moisture content can also be measured by a moisture analyzer Take measurements. (See 6.4, 5.5 of the.2009 edition) This standard was proposed by China Nonferrous Metals Industry Association. This standard is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243). Drafting organizations of this standard. Guiyan Platinum Industry Co., Ltd., Guiyan Industrial Catalyst (Yunnan) Co., Ltd., Shaanxi Ruike New Materials Co., Ltd. Co., Ltd., Xi'an Kaili New Materials Co., Ltd., Non-ferrous Metal Technology and Economic Research Institute. The main drafters of this standard. Dai Yunsheng, Tang Chun, An Nihong, Wang Hongqin, Pan Zaifu, Wang Shuying, Shen Yafeng, Zhang Feng, Yin Zhaojin, Yang Shanxiao, Dong Jilong, Ma Yuan, Gan Jianzhuang, Fang Wei, Zhou Shuyan, Shi Xiaoni, Li Yuefeng, Zhang Peng. The previous versions of the standard replaced by this standard are as follows. ---GB/T 23518-2009. Palladium on carbon

1 Scope

This standard specifies the classification and marking, technical requirements, test methods, inspection rules and markings, packaging, transportation, storage, quality certification of palladium carbon The contents of the specification and purchase order (or contract). This standard applies to palladium carbon used in fine chemicals, pharmaceuticals and other hydrogenation reduction processes.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated references, the latest version (including all amendments) applies to this document. GB/T 10722 Determination of total surface area and external surface area of carbon black by nitrogen adsorption method YS/T 1072 Methods for chemical analysis of palladium on carbon-Determination of palladium content-Inductively coupled plasma atomic emission spectrometry YS/T 1073 Palladium-carbon chemical analysis method. Determination of lead, copper and iron content. Inductively coupled plasma atomic emission spectrometry

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Palladium on carboncatalyst A mixture of palladium evenly distributed on the surface of carbon materials. Note. Carbon materials include activated carbon, carbon black, mesoporous carbon, carbon nanotubes, and carbon molecular sieves.

4 Classification and marking

According to the mass fraction of palladium in the product and the type of carbon. Marking. mass fraction (%)-Pd/C- carbon type Example. The mass fraction of Pd (%) is 3%, and the carrier is palladium carbon with activated carbon, which is marked as. 3%-Pd/C-activated carbon.

5 Technical requirements

5.1 Chemical composition After the product is dried at 105℃±5℃ until constant weight (dry basis), the chemical composition should meet the requirements of Table 1. ......

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